kernel: protection fault trap, code=0 Stopped at pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace pool_do_put(ffffffff8266f078,fffffd806f0dde80) at pool_do_put+0x12e sys/kern/subr_pool.c:844 pool_put(ffffffff8266f078,fffffd806f0dde80) at pool_put+0x6f sys/kern/subr_pool.c:802 rtrequest_delete(ffff800020b5b4c0,1,ffff800000a47000,ffff800020b5b590,0) at rtrequest_delete+0x20b _atomic_inc_int machine/atomic.h:139 [inline] rtrequest_delete(ffff800020b5b4c0,1,ffff800000a47000,ffff800020b5b590,0) at rtrequest_delete+0x20b sys/net/route.c:811 rt_ifa_del(ffff800000a93800,200404,ffff800000a93858,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 rt_ifa_dellocal(ffff800000a93800) at rt_ifa_dellocal+0x149 sys/net/route.c:1294 in_purgeaddr(ffff800000a93800) at in_purgeaddr+0x12a sys/netinet/in.c:735 in_ifdetach(ffff800000a47000) at in_ifdetach+0x74 sys/netinet/in.c:949 if_detach(ffff800000a47000) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a47000) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800020b5b850) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd807a457278,7,fffffd807f7c69c0,ffff800020a5e770) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd806cf857c8,ffff800020a5e770) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cf857c8,ffff800020a5e770) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd806cf857c8,ffff800020a5e770) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd806cf857c8,ffff800020a5e770) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020a5e770) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020a5e770,9,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020a5e770,9) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020a5e770,9) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020a5e770) at userret+0x199 sys/kern/kern_sig.c:1889 syscall(ffff800020b5bcd0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff800020b5bcd0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7c40, count: -20 ddb{0}> show registers rdi 0 rsi 0x1067579493c6aa rbp 0xffff800020b5b3d0 rbx 0x1067579493c6aa rdx 0 rcx 0x10000 __ALIGN_SIZE+0xf000 rax 0xffffffff8248aff0 cpu_info_full_primary+0x1ff0 r8 0xffffffff81d050cf arp_rtrequest+0x11f r9 0x5 r10 0x3cbcf999842e9800 r11 0xad44bf823f39f959 r12 0xfffffd806f0dde80 r13 0x1067579493c6aa r14 0xffffffff8266f078 arp_pool r15 0xfffffd806f0ddf90 rip 0xffffffff8189e80e pool_do_put+0x12e cs 0x8 rflags 0x10292 __ALIGN_SIZE+0xf292 rsp 0xffff800020b5b320 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb{0}> show proc PROC (syz-executor.0) pid=455186 stat=onproc flags process=a proc=2000 pri=53, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff800020a5fb30,0xffff800020ab18d8 process=0xffff800020add180 user=0xffff800020b56000, vmspace=0xfffffd807f008a10 estcpu=18, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 40946 89985 37603 0 3 0x82 thrsleep syz-execprog 40946 250221 37603 0 3 0x4000082 nanosleep syz-execprog 40946 402619 37603 0 3 0x4000082 thrsleep syz-execprog 40946 389719 37603 0 3 0x4000082 thrsleep syz-execprog 40946 112276 37603 0 3 0x4000082 thrsleep syz-execprog 40946 197699 37603 0 3 0x4000082 thrsleep syz-execprog 40946 378786 37603 0 3 0x4000082 nanosleep syz-execprog 40946 72567 37603 0 3 0x4000082 thrsleep syz-execprog 40946 875 37603 0 3 0x4000082 wait syz-execprog 37603 406686 77916 0 3 0x10008a pause ksh 77916 182934 45389 0 3 0x92 select sshd 33269 225192 1 0 3 0x100083 ttyin getty 45389 441953 1 0 3 0x80 select sshd 33509 263153 51357 74 3 0x100092 bpf pflogd 51357 165736 1 0 3 0x80 netio pflogd 78238 46924 32317 73 3 0x100090 kqread syslogd 32317 222276 1 0 3 0x100082 netio syslogd 12533 266967 1 77 2 0x100090 dhclient 17198 276678 1 0 3 0x80 poll dhclient 90020 328934 0 0 3 0x14200 pgzero zerothread 12190 176956 0 0 3 0x14200 aiodoned aiodoned 22540 409621 0 0 3 0x14200 syncer update 80019 452353 0 0 3 0x14200 cleaner cleaner 96428 80468 0 0 3 0x14200 reaper reaper 28759 394202 0 0 3 0x14200 pgdaemon pagedaemon 34762 130331 0 0 3 0x14200 bored crynlk 84388 10870 0 0 3 0x14200 bored crypto 39430 521177 0 0 3 0x40014200 acpi0 acpi0 91371 40158 0 0 3 0x40014200 idle1 13962 483019 0 0 7 0x14200 softnet 90173 28544 0 0 2 0x14200 systqmp 11405 193860 0 0 3 0x14200 bored systq 81349 349400 0 0 3 0x40014200 bored softclock 14009 183652 0 0 3 0x40014200 idle0 5072 47610 0 0 3 0x14200 bored smr 1 388324 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex arp r = 0 (0xffffffff8266f088) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_put+0x64 sys/kern/subr_pool.c:800 #4 rtrequest_delete+0x20b _atomic_inc_int machine/atomic.h:139 [inline] #4 rtrequest_delete+0x20b sys/net/route.c:811 #5 rt_ifa_del+0x3c3 sys/net/route.c:1191 #6 rt_ifa_dellocal+0x149 sys/net/route.c:1294 #7 in_purgeaddr+0x12a sys/netinet/in.c:735 #8 in_ifdetach+0x74 sys/netinet/in.c:949 #9 if_detach+0x140 sys/net/if.c:1151 #10 tun_clone_destroy+0x179 sys/net/if_tun.c:312 #11 spec_close+0x311 sys/kern/spec_vnops.c:555 #12 VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 #13 vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] #13 vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 #14 fdrop+0xc2 sys/kern/kern_descrip.c:1273 #15 closef+0x11d sys/kern/kern_descrip.c:1257 #16 fdfree+0x101 sys/kern/kern_descrip.c:1189 #17 exit1+0x32f sys/kern/kern_exit.c:196 #18 postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] #18 postsig+0x4e3 sys/kern/kern_sig.c:1431 Process 13962 (softnet) thread 0xffff800020a10278 (483019) shared rwlock softnet r = 0 (0xffff8000000230e0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 taskq_thread+0x8f sys/kern/kern_task.c:367 #2 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9463 6395K 6395K 78643K 10556 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 79 2K 2K 78643K 163 0 0 ifaddr 37 9K 9K 78643K 39 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1468 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1181 74K 74K 78643K 1186 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12766 0 0 file desc 2 4K 12K 78643K 18 0 0 proc 59 63K 83K 78643K 398 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 22 1K 1K 78643K 22 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 197 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 73 12K 12K 78643K 948 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 7 0K 0K 78643K 7 0 0 temp 33 3542K 3605K 78643K 3291 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 4 0 0 1 0 1 1 0 8 0 arp: pool(0xffffffff8266f078:arp): free list modified: page 0xfffffd806f0dd000; item ordinal 21; addr 0xfffffd806f0dd000 (p 0xfffffd806f0dd000); offset 0x0=0x0 pool(arp): free list modified: page 0xfffffd806f0dd000; item ordinal 21; addr 0xfffffd806f0dd000 (p 0xfffffd806f0dd000); offset 0x0=0x0 arp: pool(0xffffffff8266f078:arp): page inconsistency: page 0xfffffd806f0dd000; item ordinal 22; addr 0x1067579493c6aa plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 3 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 34 0 28 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 10 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1421 0 20 46 0 46 46 0 8 0 ffsino 272 1421 0 20 94 0 94 94 0 8 0 nchpl 144 1660 0 52 60 0 60 60 0 8 0 uvmvnodes 72 1431 0 0 27 0 27 27 0 8 0 vnodes 208 1431 0 0 76 0 76 76 0 8 0 namei 1024 4131 0 4131 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4102 0 4102 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 224 0 211 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 160 148 0 136 1 0 1 1 0 8 0 fdescpl 488 225 0 211 3 0 3 3 0 8 0 filepl 152 1113 0 1056 3 0 3 3 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 212 0 211 1 0 1 1 0 8 0 processpl 896 240 0 211 4 0 4 4 0 8 0 procpl 632 248 0 211 4 0 4 4 0 8 0 srpgc 64 2 0 0 1 0 1 1 0 8 0 sockpl 384 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 75 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 108 0 0 6 0 6 6 0 8 0 bufpl 256 5880 0 1310 286 0 286 286 0 8 0 anonpl 16 21873 0 20307 14 1 13 13 0 124 6 amapchunkpl 152 787 0 722 5 0 5 5 0 158 2 amappl16 192 132 0 104 2 0 2 2 0 8 0 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 51 0 45 1 0 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 2 0 2 1 1 0 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 11 0 7 1 0 1 1 0 8 0 amappl9 136 432 0 430 1 0 1 1 0 8 0 amappl8 128 126 0 115 1 0 1 1 0 8 0 amappl7 120 42 0 38 1 0 1 1 0 8 0 amappl6 112 55 0 50 1 0 1 1 0 8 0 amappl5 104 131 0 117 1 0 1 1 0 8 0 amappl4 96 488 0 462 1 0 1 1 0 8 0 amappl3 88 115 0 109 1 0 1 1 0 8 0 amappl2 80 936 0 877 3 0 3 3 0 8 1 amappl1 72 14891 0 14481 26 8 18 20 0 8 8 amappl 80 473 0 445 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 225 0 211 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 225 0 211 1 0 1 1 0 8 0 vmmpekpl 168 6392 0 6369 2 0 2 2 0 8 0 vmmpepl 168 32307 0 31396 90 10 80 80 0 357 38 vmsppl 368 224 0 211 2 0 2 2 0 8 0 pdppl 4096 457 0 422 6 0 6 6 0 8 1 pvpl 32 111991 0 108007 115 0 115 115 0 265 81 pmappl 232 224 0 211 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 426 0 3 13 0 13 13 0 8 0 ddb{0}>